Electrochemical insertion of Sr2+ ions onto nano δ-MnO2 particles

Prasant Kumar Nayak; N. Munichandraiah

doi:10.1016/j.matlet.2010.03.020

Electrochemical insertion of Sr²⁺ ions onto nano δ-MnO₂ particles

Prasant Kumar Nayak, N. Munichandraiah

Indian Institute of Science Bangalore

Research output: Contribution to journal › Article › peer-review

Abstract

Manganese dioxide is known to be an important electroactive material for supercapacitors. Generally, δ-MnO₂ is subjected to electrochemical characterization studies in aqueous electrolytes of Na₂SO₄. It exhibits capacitance behaviour in the potential range between 0 and 1.0 V vs. SCE (saturated calomel electrode). In the present study, it is shown that δ-MnO₂ exhibits capacitance behaviour in Sr(NO₃)₂ electrolytes also. The suitable potential range in this electrolyte is also found to be 0-1.0 V. Specific capacitance measured in Sr(NO₃)₂ electrolyte is 192 F g^{- 1}. X-ray photoelectron spectroscopy data confirm that Sr²⁺ ions get inserted onto δ-MnO₂ nanoparticles.

Original language	English
Pages (from-to)	1319-1321
Number of pages	3
Journal	Materials Letters
Volume	64
Issue number	11
DOIs	https://doi.org/10.1016/j.matlet.2010.03.020
State	Published - 15 Jun 2010
Externally published	Yes

Keywords

Nanomaterials
Porosity
Specific capacitance

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10.1016/j.matlet.2010.03.020

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title = "Electrochemical insertion of Sr2+ ions onto nano δ-MnO2 particles",

abstract = "Manganese dioxide is known to be an important electroactive material for supercapacitors. Generally, δ-MnO2 is subjected to electrochemical characterization studies in aqueous electrolytes of Na2SO4. It exhibits capacitance behaviour in the potential range between 0 and 1.0 V vs. SCE (saturated calomel electrode). In the present study, it is shown that δ-MnO2 exhibits capacitance behaviour in Sr(NO3)2 electrolytes also. The suitable potential range in this electrolyte is also found to be 0-1.0 V. Specific capacitance measured in Sr(NO3)2 electrolyte is 192 F g- 1. X-ray photoelectron spectroscopy data confirm that Sr2+ ions get inserted onto δ-MnO2 nanoparticles.",

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AU - Nayak, Prasant Kumar

AU - Munichandraiah, N.

PY - 2010/6/15

Y1 - 2010/6/15

N2 - Manganese dioxide is known to be an important electroactive material for supercapacitors. Generally, δ-MnO2 is subjected to electrochemical characterization studies in aqueous electrolytes of Na2SO4. It exhibits capacitance behaviour in the potential range between 0 and 1.0 V vs. SCE (saturated calomel electrode). In the present study, it is shown that δ-MnO2 exhibits capacitance behaviour in Sr(NO3)2 electrolytes also. The suitable potential range in this electrolyte is also found to be 0-1.0 V. Specific capacitance measured in Sr(NO3)2 electrolyte is 192 F g- 1. X-ray photoelectron spectroscopy data confirm that Sr2+ ions get inserted onto δ-MnO2 nanoparticles.

AB - Manganese dioxide is known to be an important electroactive material for supercapacitors. Generally, δ-MnO2 is subjected to electrochemical characterization studies in aqueous electrolytes of Na2SO4. It exhibits capacitance behaviour in the potential range between 0 and 1.0 V vs. SCE (saturated calomel electrode). In the present study, it is shown that δ-MnO2 exhibits capacitance behaviour in Sr(NO3)2 electrolytes also. The suitable potential range in this electrolyte is also found to be 0-1.0 V. Specific capacitance measured in Sr(NO3)2 electrolyte is 192 F g- 1. X-ray photoelectron spectroscopy data confirm that Sr2+ ions get inserted onto δ-MnO2 nanoparticles.

KW - Nanomaterials

KW - Porosity

KW - Specific capacitance

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Electrochemical insertion of Sr²⁺ ions onto nano δ-MnO₂ particles

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Keywords

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